week 2

Question 1

Engine Components
CLASSIFIED INTO FOUR (4) GROUPS:

Answer 1

power chain
stationary parts
valve system
auxiliary parts and Accessories

Question 2

– to receive, exert, and
transmit the motive forces

Answer 2

power chain

Question 3

– to constrain and support
moving parts

Answer 3

Stationary Parts

Question 4

– time the operating
sequence

Answer 4

Valve System

Question 5

– receives and transmits the pressure
forces in the combustion chamber to the
rotating crankshaft

Answer 5

piston

Question 6

– retain compression; reduce
cylinder wall contact thereby reducing
friction losses and wear

Answer 6

piston rings

Question 7

serves to fasten the piston to the
upper end of the connecting rod; wrist pin

Answer 7

Piston pin

Question 8

– transmits the power of
combustion from the piston to the
crankshaft

Answer 8

Connecting rod

Question 9

• bearing where
  connecting rod fastens to crankshaft

Answer 9

Connecting rod bearing

Question 10

converts the rectilinear motion
of the piston into rotation

Answer 10

crankshaft

Question 11

– inertia, keep the engine at
uniform speed when the crankshaft is not
receiving power from the piston

Answer 11

flywheel

Question 12

confines the expanding
gases and forms the combustion chamber

Answer 12

cylinder block

Question 13

– houses the valves and forms
a cover to the cylinder

Answer 13

Cylinder head

Question 14

– end of the cylinder
between the head and the piston face where
combustion occurs; sometimes synonymous
with the term “cylinder”

Answer 14

Combustion chamber

Question 15

– end of the cylinder
between the head and the piston face where
combustion occurs; sometimes synonymous
with the term “cylinder”

Answer 15

Combustion chamber

Question 16

– serves the purpose of
supporting the shaft, mounting the cylinder,
housing the running parts, and forming the
reservoir for lubricating oil

Answer 16

Crankcase –

Question 17

– serves to conduct the air
or air-fuel mixture into the cylinder

Answer 17

Intake manifold

Question 18

– serves to conduct the
burned gases away from the engine

Answer 18

Exhaust manifold

Question 19

– used for opening and closing ports
leading into or out of the combustion
chambers

Answer 19

Valves

Question 20

– maybe formed in the cylinder
head or block or maybe a removable inserts
of special alloy steel

Answer 20

Valve seats

Question 21

– fits tightly in the cylinder
block and serves to guide the valve in motion

Answer 21

Valve stem guide –

Question 22

– raise the valves in
the L-head and T-head types of engines;
receives their motions from cams mounted
on a camshaft or cam gear

Answer 22

Valve lifter or tappets

Question 23

serves to guide the
tappets in its motion

Answer 23

Valve lifter guide

Question 24

pivoted in its center; one end
contacts the end of the valve stem and the
other contacts the upper end of the tappet

Answer 24

Rocker arm

Question 25

linkage between the camshaft and valves on overhead valve engines

Answer 25

Push rod -

Question 26

– a wheel with a lobe or projection on its face

Answer 26

cam

Question 27

– rotating shaft used to push open valves at the proper time in the engine cycle

Answer 27

camshaft

Question 28

electrical device used to initiate combustion in an SI engine by creating a high-voltage discharge across an electrode gap

Answer 28

Spark plug

Question 29

Venturi flow device which meters the proper amount of fuel into the air flow by means of a pressure differential

Answer 29

Carburetor

Question 30

mounted in exhaust flow containing catalytic material that promotes reduction of emissions by chemical reaction

Answer 30

Catalytic converter -

Question 31

– pressurized nozzle that sprays fuel into the incoming air on SI engines or into the cylinder on CI engines

Answer 31

Fuel injector

Question 32

Electrically or mechanically driven pump to supply fuel from the fuel tank (reservoir) to the engine

Answer 32

fuel Pump

Question 33

pump used to distribute oil from the oil sump to required lubrication points

Answer 33

oil pump

Question 34

butterfly valve mounted at the upstream end of the intake system that controls the amount of air flow into an SI engine

Answer 34

Throttle

Question 35

metal fins on the outside surfaces of cylinders and head of an air-cooled engine

Answer 35

Cooling fins

Question 36

– system of liquid flow passages surrounding the cylinders; usually constructed as part of the engine block and head

Answer 36

Water Jacket

Question 37

heat exchanger used to remove heat from the engine coolant after the engine has been cooled upstream end of the intake system; honeycomb construction

Answer 37

Radiator

Question 38

– pump used to circulate engine coolant through the engine and radiator.

Answer 38

Water Pump

Question 39

– to cool and lubricate the surfaces and provide ignition and fuel for the engine

Answer 39

Auxiliary parts & Accessories